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CVE Record

CVE-2025-59465: A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node.js to crash by trigg...

A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node.js to crash by triggering an unhandled `TLSSocket` error `ECONNRESET`. Instead of safely closing the connection, the process crashes, enabling a remote denial of service. This primarily affects applications that do not attach explicit error handlers to secure sockets, for example: ``` server.on('secureConnection', socket => { socket.on('error', err => { console.log(err) }) }) ```

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2025-59465 is a remote denial-of-service issue in Node.js HTTP/2 handling. A malformed request can crash some Node.js processes instead of being safely rejected. The business risk is service outage, especially for internet-facing APIs or sites using secure HTTP/2 without defensive socket error handling.

Executive priority

Prioritize remediation for public Node.js web services because the impact is outage rather than data theft. Treat as high urgency for customer-facing APIs, authentication flows, or revenue-critical services using HTTP/2.

Technical view

Malformed HTTP/2 HEADERS frames with oversized invalid HPACK data can trigger an unhandled TLSSocket ECONNRESET error and crash Node.js. The source bundle maps this to CWE-248 and CWE-400 with CVSS 7.5, network attack vector, no privileges, no user interaction, and high availability impact.

Likely exposure

Most relevant to Node.js applications exposing HTTPS HTTP/2. Exposure is higher where the application lacks explicit secure socket error handlers. Red Hat advisories indicate downstream product packaging may also need vendor-specific updates.

Exploitation context

The bundle does not show CISA KEV listing or cited evidence of active exploitation. The issue is remotely reachable and low-complexity by CVSS, but the provided sources do not establish public exploit use or weaponized activity.

Researcher notes

Evidence supports a crash-class availability bug tied to HTTP/2 HPACK handling and unhandled TLS socket errors. The bundle does not provide exploit telemetry, detailed patch mechanics, or a complete affected-version matrix, so validation should follow vendor advisories closely.

Mitigation direction

  • Review Node.js December 2025 security release guidance for fixed versions.
  • Apply relevant Red Hat errata for packaged Node.js deployments.
  • Add explicit error handlers for secure sockets where applicable.
  • Prioritize internet-facing HTTPS HTTP/2 services first.
  • Monitor Node.js process crashes and ECONNRESET-related failures.

Validation and detection

  • Inventory Node.js services using HTTPS HTTP/2.
  • Compare deployed versions against Node.js and Red Hat advisories.
  • Review code for secureConnection socket error handlers.
  • Check supervisors and logs for unexplained Node.js crashes.
  • Confirm patch status in container base images and OS packages.
Prepared
Confidence
medium
Sources
12

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-248: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cwe · low confidence lookup

CWE-400: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2025-59465 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

2CVSS vectors
5Timeline events
2ADP providers
21Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: partial

CVSS vector scores

2 official scores

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.0HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6hackerone
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6redhat-SADP

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2025-59465Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. ADP timelineredhat-SADP

    Made public.

  3. CVE publishedCVE Program

    The CVE record was published.

  4. ADP timelineredhat-SADP

    Reported to Red Hat.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
redhat-SADPnodejs: Nodejs denial of service
other:Red Hat severity ratingcvssV3_1
  • 2026-01-20T21:02:37.799Z: Reported to Red Hat.
  • 2026-01-20T20:41:55.317Z: Made public.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
nodejsnode20.19.6, 22.21.1, 24.12.0, 25.2.1, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0unaffected
Weakness

CWE details

CWE-248CWE-400

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-248 · source CWE mapping

Uncaught Exception

Uncaught Exception represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs
CWE-400 · source CWE mapping

Uncontrolled Resource Consumption

Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs